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SQL: Determine if one coordinate is in radius of another
I've got a question about geolocation in PHP.
I've got latitude and longitude values. Do you know how can I have new values from distance?
I mean, I want to have all the stores 1 or 2 miles around, for example, from a position. My database contains shops with latitude and longitude values, and I want to have all near stores.
Do you understand what I mean?